Making constructional sections.



PATENTED AUG. 14, 1906.

G. ATTERBURY.

MAKING CONSTRUGTIONAL SECTIONS.

APPLICATION FILED DEO.5,1904.

In 06 it for. Groflewrfierbu ry 197 I115 ATT'OIYIVFYS UNITED srArnsPATENT ornion'.

GROSVENOR ATTERBURY, OF NEW YORK, N. Y., ASSIGNOR TO CHARLES L.ATTERBURY, OF'NEW YORK, N. Y.

lVlA K lNG CON\STRUCTIONAL sac-nous.

Patented Aug. 14, 1906.-

Application filed Deoeinber 5,1904. $erlal1lo.236,521.

To all whom, ifr may concern:

Be it known that I, GROSVENOR ATTER- BURY, a citizenof the UnitedStates, and a resident of the boron of Manhattan, city and State of NewYork, (havin a post-oflice address at' 20 West Forty-third street, insaid borough of Manhattan,) have invented certain new and usefulImprovements in Apparatus for Making Constructional Sections, of whichthe following is a full and true description, reference being had to theaccompanying drawings, which show means devised by me for makingbuilding-sections.

I have devised a new mode of buildingerection employing largebuilding-sections, which enga e parts carried by the buildingskeleton.Ipreferably use cellular or hollow buildin -sections in order to assureeconomy and lig tness and to also provide passages for wires, pipes, &c.The buildin -sections referred to are preferably compose of a hardenedconcrete cement and are formed by filling concrete grout or othersuitable material into a mold-box or other frame.

My present invention relates to an imroved apparatus for making cellularor hol ow constructional sections, especially buildin -sections.

n the accompanying drawings I have shown an apparatus for making afloor-section to be fitted by gravity into engagement with thefloor-beams of the building-skeleton.

Figure 1 is a vertical section, on the line 1 1 of Figs. 2 and 3, of oneform of the novel molding apparatus which I employ. Fig. 2 is a sideview of such apparatus. Fig. 3 IS a horizontal section on the lines 3 3of Figs. 1 and 2, and Fig. 4 is a fragmentary pers ective view showingportions of the assem led mold-sections and in part the general outlineof a floor-section as made therein.

The molding apparatus may rest upon a floor A, made of thin boardsorplates, which may rest upon a heavier floorin a.

Bis the base of the mold, an O C and D D indicate, respectively, thesides and ends of the mold box or flask. As shown in Fig. 1, the basemay have grooves 1), into which the lower edges of C an D will fit, thusassuring a tight joint between the bottom and the sides and ends. Thesides and ends may each comprise a sin le board or plate or be built upin any way esired.

End clamps E, which may be iron bars or castings adapted to gripopposite sides of the mold-box, may be used to hold the parts of the boxfirmly to other and to permit the sides and ends to e readily, takenaway in order to remove the hardened building-section.

A hopper-frame F, having its sides and ends made of boards or platessecured together, so as to have a wide mouth and inwardly-inclined sidesG, fits down upon the upper edge of the mold-box, and in order to have atight fit between the parts referred to the lower edge of thehopper-frame is cut away to provide a dependent frame f and acorresponding shoulder, as shown in Figs. 1 and 3.

In conjunction with a mold-box or a substitute therefor I may use anysuitable construction of cores or core mechanism in order to assure themolding or hardening of the constructional section in the form desired,a cellular or hollow hardened block of hardened cementitious material,such as concrete. order, however, that the cost of the cores shall bereduced and to produce cores which may be repeatedly used and readilyput in place and removed and without the necessity of reassembling theparts of the core mechanism, I use hollow cores, preferably tu bular,instead of solid, ones, and fill suitable material thereinto to theextent desired and then remove the tubes and leave the filling materialto retain the shape of the cells or hollow parts Y in the hardeningcementitious material, which constitutes the constructional section X.

As shown in the drawings, I may use a plurality of thin sheetmetal tubesH, which are preferably of substantially equal thickness throughout andwhose exterior corresponds to the interior of the cells or hollow artsof the building-section. The several tu as may be connected in anysuitable way for simultaneous insertion and removal from the moldbox,and for this purpose the upper ends of all the tubes may be connectedthrough the bottom of a hopper-box I, which also affords a simple meansfor maintaining all of the tubes in the desired relation and to permitthem to be quickly filled, as desired, with the sand. As a further meansfor maintaining the tubes in the desired relation the lower ends of saidtubes may fit into openings through the mold-base B. To facilitate thehandling of the core mechanism, handles or rods -J are provided at theends of the hopper I and permit the core mechanisms to be readily ralsedor lowered. v

.When the mold-box and the core devices are assembled, as shown in Figs.1 and 2, the liquid or semiliquid cementitious or other hardeningmaterial (which may be a hot asphalt mixture or concrete grout or any oter hardening or cementitious mixture (to constitute the building-sectionor other constructional section is shoveled or oured into the frame orhoppcr F and fa s into the mold-box, filling all parts of the sameexte-' rior of the tubes H. Sand (either wet or dry) or othernon-cementitious or filling material lVl, preferably of approximatelythe same speclfic gravity as the material L, is also shoveled, poured,or dumped into thehopper l and falls into and fills the tubes H to theextent desired. The two materials L and M may be simultaneously orsuccessively filled into the apparatus. The two mixtures bein ofsubstantially the same specific gravity, t e tubes H may be withdrawnimmediately or within a short time after fillin both mixtures into themolding apparatus, eaving the filling ma terial to support thesurrounding concrete mixture or other material during the time necessaryfor it to set and season. When this result has been attained, themold-box may be taken apart, and the building-section having been liftedor tilted the sand or other filling material will flow or empty from orbe easily driven out of the cells or openings Y in the building-section.If desired, the entire mold-box may be raised so as to permit the sandto run from the openings in the base B either before or after themold-box is taken apart. I

The employment of wet sand or other suitable filling mixture for thepurpose hereinbefore stated gives several advantages, amongI which arethe following: first, permits t e use of cementitious material insemiliquid or even liquid form, thereby saving time and expensenecessary to the packing of a drier form of mixture in the ordinarycasting methods; second, renders the withdrawal of the cores much easierand quicker than where they are held by the friction resultant from theordinary dry mixtures, which must be packed in order to make them stiffenou h to avoid collapse on the .withdrawal of t e cores; third, rendersit possible to cast very thin sections or webs of the cementitiousmaterial and of as great a height as may be desired, since the tubularcores maybe partially withdrawn and additional casting mixture andfilling material introduced both inside and outside until the desiredheight of casting is obtained, and thus without increasing the height ofthe tubular cores; fourth, the avoidance of any disturbance of thehardening material after its introduction around the cores by reason offriction and jarring when removing the cores, whereas in the usualprocesses of castin the cores must be left for a time to permit t esurroundin material to set sufciently for withdrawa of the cores withoutcollapse of the material; fifth, furnishing to the mixture L, if it beconcrete or cement, a sufficient amount of water during any desiredperiod, which is a necessary conditlon to secure the maximum degree ofstrength, and, sixth, the filling mixture, which during the settingprocess loses much of its moisture, is readily removed from or falls outof the sells or hollow arts of the building-section and can be again wetand reused.

Having described one form of apparatus involving my invention, Iclaim 1. An apparatus for making cellular or hollow building-sections,comprising a suitable mold, tubular cores within said mold, said core'sbeing longer than the height of said mold to allow simultaneous fillingof said cores and mold. c

2. An apparatus for making cellular or hollow buildm -sections,comprlsing a suitable mold, tubular cores within said mold, said coresbeing longer than the height of said mold, and a hopper connecting theup er ends of said cores, to allow simultaneous filling of said coresand mold.

3. An apparatus for making cellular or hollow building-sections,comprising a suitable mold having a hopper surrounding its top, tubularcores withm said mold. said cores being longer than the height of saidmold, and a hopper connecting the upper ends of said cores, to allowsimultaneous filling of said cores and mold.

In witness whereof I have hereunto signed my name this 1st day ofDecember, 1904.

GROSVENOR ATTERBURY; In presence of ALBERT E. WILsON, JoEL L. HALLsTRoM.

